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package io.vertx.httpproxy.interceptors;

import io.vertx.codegen.annotations.Unstable;
import io.vertx.codegen.annotations.VertxGen;
import io.vertx.core.buffer.Buffer;
import io.vertx.core.json.JsonArray;
import io.vertx.core.json.JsonObject;
import io.vertx.httpproxy.interceptors.impl.BodyTransformerImpl;

import java.util.function.Function;

/**
 * The callback to transform the request or response body.
 */
@VertxGen
@Unstable
public interface BodyTransformer extends Function {

  /**
   * Create a callback for transform JsonObject.
   *
   * @param transformer the operation to transform data
   * @return the built callback
   */
  static BodyTransformer transformJsonObject(Function transformer) {
    return BodyTransformerImpl.transformJsonObject(transformer);
  }

  /**
   * Create a callback for transform JsonArray.
   *
   * @param transformer the operation to transform data
   * @return the built callback
   */
  static BodyTransformer transformJsonArray(Function transformer) {
    return BodyTransformerImpl.transformJsonArray(transformer);
  }

  /**
   * Create a callback for transform json with unknown shape.
   *
   * @param transformer the operation to transform data
   * @return the built callback
   */
  static BodyTransformer transformJson(Function transformer) {
    return BodyTransformerImpl.transformJson(transformer);
  }

  /**
   * Create a callback for transform texts.
   *
   * @param transformer the operation to transform data
   * @return the built callback
   */
  static BodyTransformer transformText(Function transformer, String encoding) {
    return BodyTransformerImpl.transformText(transformer, encoding);
  }

  /**
   * Create a callback to discard the body.
   *
   * @return the built callback
   */
  static BodyTransformer discard() {
    return BodyTransformerImpl.discard();
  }
}